I know of a place that sells quite a few old school polaroids.
At far east, level 2, if I dun remember wrongly. There's a shop selling all sort of vintage stuffs. He was into collecting all these things even back in those days.
And he has quite a number of polaroids camera in the past.
Can check on them. And if I dun remember wrongly, he sells them at quite an affordable price. Go check it out.